Gadget Z is the newly remodeled version of Gadget. Meg got struck by lightning, and the idea came to her. She then built Gadget Z, with increased offensive capabilities but also increased vulnerability. She entrusted her daughter Belle with care of the robot, but then left. Gadget has since travelled with Belle on a search for her mother. They joined forces with the Fire Bringer when they helped repair Gadget by finding a screw that was lost to monsters. He continues to travel with Belle. - KoRnholio